#517DBF#517DBF

#517DBF is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.8% C 0.113 H 258.3°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#517DBF
RGB	rgb(81, 125, 191)
HSL	hsl(216, 46%, 53%)
HSV	hsv(216, 58%, 75%)
CMYK	cmyk(57.6%, 34.6%, 0%, 25.1%)
CIE-LAB	lab(52.04, 4.77, -39.14)
CIE-LCH	lch(52.04, 39.43, 276.94°)
OKLab	oklab(58.77% -0.023 -0.1106)
OKLCH	oklch(58.77% 0.113 258.3)
XYZ	xyz(20.1276, 20.1765, 52.1139)
Luminance	0.2018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#517DBF #BF9351

analogous

#51B4BF #517DBF #5C51BF

triadic

#517DBF #BF517D #7DBF51

tetradic

#517DBF #BF51B4 #BF9351 #51BF5C

square

#517DBF #BF51B4 #BF9351 #51BF5C

split-complementary

#517DBF #BF5C51 #B4BF51

monochromatic

#28446D #39609A #517DBF #7E9ECF #AAC0E0

Accessibility & contrast

On white

4.17

#517DBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#517DBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #517DBF

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##517DBF	#FFFFFF	#000000	##000000
##517DBF	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6282C2

Deuteranopia (green-blind)

#5477BE

Tritanopia (blue-blind)

#008C95

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #517dbf;
/* rgb */ color: rgb(81, 125, 191);
/* oklch */ color: oklch(58.8% 0.113 258.3);

Tailwind

colors: {
  custom: {
    50: '#8aa2d2',
    500: '#517dbf',
    950: '#000000',
  },
}

SCSS

$custom: #517dbf;
$custom-light: #8aa2d2;
$custom-dark: #000000;

JSON

{
  "hex": "#517dbf",
  "rgb": {
    "r": 81,
    "g": 125,
    "b": 191
  },
  "hsl": {
    "h": 216,
    "s": 46.218,
    "l": 53.333
  },
  "oklch": {
    "l": 0.58771,
    "c": 0.11299,
    "h": 258.3
  },
  "luminance": 0.20178
}

Semantic roles & 50–950 ramp

primary

#517DBF

secondary

#CEBB9E

accent

#A152D6

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0C0F14

muted

#7D7E82

Preview Lab

Preview with #517DBF

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →